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<div class="title">observer_dynamics.h</div>  </div>
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<a href="observer__dynamics_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/* -------------------------------------------------------------------------*</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment">*                               SPHinXsys                                   *</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment">* --------------------------------------------------------------------------*</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment">* SPHinXsys (pronunciation: s&#39;finksis) is an acronym from Smoothed Particle *</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment">* Hydrodynamics for industrial compleX systems. It provides C++ APIs for    *</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment">* physical accurate simulation and aims to model coupled industrial dynamic *</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment">* systems including fluid, solid, multi-body dynamics and beyond with SPH   *</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment">* (smoothed particle hydrodynamics), a meshless computational method using  *</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment">* particle discretization.                                                  *</span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment">*                                                                           *</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment">* SPHinXsys is partially funded by German Research Foundation               *</span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment">* (Deutsche Forschungsgemeinschaft) DFG HU1527/6-1, HU1527/10-1             *</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment">* and HU1527/12-1.                                                          *</span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="comment">*                                                                           *</span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment">* Portions copyright (c) 2017-2020 Technical University of Munich and       *</span></div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="comment">* the authors&#39; affiliations.                                                *</span></div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="comment">*                                                                           *</span></div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="comment">* Licensed under the Apache License, Version 2.0 (the &quot;License&quot;); you may   *</span></div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="comment">* not use this file except in compliance with the License. You may obtain a *</span></div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="comment">* copy of the License at http://www.apache.org/licenses/LICENSE-2.0.        *</span></div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="comment">*                                                                           *</span></div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="comment">* --------------------------------------------------------------------------*/</span></div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="preprocessor">#pragma once</span></div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160; </div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;<span class="preprocessor">#include &quot;all_particle_dynamics.h&quot;</span></div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160; </div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespace_s_p_h.html">SPH</a></div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;{</div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;    <span class="keyword">namespace </span>observer_dynamics</div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;    {</div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;        <span class="keyword">typedef</span> DataDelegateContact&lt;SPHBody, BaseParticles, BaseMaterial, </div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;            SPHBody, BaseParticles, BaseMaterial&gt; InterpolationContactData;</div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160; </div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;        <span class="keyword">template</span> &lt;<span class="keywordtype">int</span> DataTypeIndex, <span class="keyword">typename</span> VariableType&gt;</div>
<div class="line"><a name="l00046"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1observer__dynamics_1_1_interpolating_a_quantity.html">   46</a></span>&#160;        <span class="keyword">class </span><a class="code" href="class_s_p_h_1_1observer__dynamics_1_1_interpolating_a_quantity.html">InterpolatingAQuantity</a> : <span class="keyword">public</span> <a class="code" href="class_s_p_h_1_1_interaction_dynamics.html">InteractionDynamics</a>, <span class="keyword">public</span> <a class="code" href="class_s_p_h_1_1_data_delegate_contact.html">InterpolationContactData</a></div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;        {</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;        <span class="keyword">public</span>:</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;            <span class="keyword">explicit</span> <a class="code" href="class_s_p_h_1_1observer__dynamics_1_1_interpolating_a_quantity.html">InterpolatingAQuantity</a>(<a class="code" href="class_s_p_h_1_1_base_contact_body_relation.html">BaseContactBodyRelation</a>* body_contact_relation, std::string variable_name) :</div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;                <a class="code" href="class_s_p_h_1_1_interaction_dynamics.html">InteractionDynamics</a>(body_contact_relation-&gt;sph_body_), <a class="code" href="class_s_p_h_1_1_data_delegate_contact.html">InterpolationContactData</a>(body_contact_relation),</div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;                interpolated_quantities_(*particles_-&gt;createAVariable&lt;DataTypeIndex, <a class="code" href="class_variable_type.html">VariableType</a>&gt;(variable_name))</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;            {</div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;                prepareContactData(variable_name);</div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;            };</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;            <span class="keyword">explicit</span> <a class="code" href="class_s_p_h_1_1observer__dynamics_1_1_interpolating_a_quantity.html">InterpolatingAQuantity</a>(<a class="code" href="class_s_p_h_1_1_base_contact_body_relation.html">BaseContactBodyRelation</a>* body_contact_relation,</div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;                std::string interpolated_variable, std::string target_variable) :</div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;                <a class="code" href="class_s_p_h_1_1_interaction_dynamics.html">InteractionDynamics</a>(body_contact_relation-&gt;sph_body_), <a class="code" href="class_s_p_h_1_1_data_delegate_contact.html">InterpolationContactData</a>(body_contact_relation),</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;                interpolated_quantities_(*particles_-&gt;getVariableByName&lt;DataTypeIndex, <a class="code" href="class_variable_type.html">VariableType</a>&gt;(interpolated_variable))</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;            {</div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;                prepareContactData(target_variable);</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;            };</div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;            <span class="keyword">virtual</span> ~<a class="code" href="class_s_p_h_1_1observer__dynamics_1_1_interpolating_a_quantity.html">InterpolatingAQuantity</a>() {};</div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160; </div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;        <span class="keyword">protected</span>:</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;            StdLargeVec&lt;VariableType&gt;&amp;  interpolated_quantities_;</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;            StdVec&lt;StdLargeVec&lt;Real&gt;*&gt; contact_Vol_;</div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;            StdVec&lt;StdLargeVec&lt;VariableType&gt;*&gt; contact_data_;</div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160; </div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;            <span class="keyword">virtual</span> <span class="keywordtype">void</span> Interaction(<span class="keywordtype">size_t</span> index_i, Real dt = 0.0)<span class="keyword"> override</span></div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;<span class="keyword">            </span>{</div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;                <a class="code" href="class_variable_type.html">VariableType</a> observed_quantity(0);</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;                Real ttl_weight(0);</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160; </div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;                <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> k = 0; k &lt; this-&gt;<a class="code" href="class_s_p_h_1_1_data_delegate_contact.html#a9c6f57fe46a57fef5ab82638eb446439">contact_configuration_</a>.size(); ++k)</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;                {</div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;                    StdLargeVec&lt;Real&gt;&amp; Vol_k = *(contact_Vol_[k]);</div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;                    StdLargeVec&lt;VariableType&gt;&amp; data_k = *(contact_data_[k]);</div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;                    <a class="code" href="class_s_p_h_1_1_neighborhood.html">Neighborhood</a>&amp; contact_neighborhood = (*this-&gt;<a class="code" href="class_s_p_h_1_1_data_delegate_contact.html#a9c6f57fe46a57fef5ab82638eb446439">contact_configuration_</a>[k])[index_i];</div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;                    <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> n = 0; n != contact_neighborhood.<a class="code" href="class_s_p_h_1_1_neighborhood.html#a1e2d0d9c7af09e2ee0e58903b171902d">current_size_</a>; ++n)</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;                    {</div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;                        <span class="keywordtype">size_t</span> index_j = contact_neighborhood.<a class="code" href="class_s_p_h_1_1_neighborhood.html#aaec2f984f8c1afd41b2ea98ec7033f99">j_</a>[n];</div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;                        Real weight_j = contact_neighborhood.<a class="code" href="class_s_p_h_1_1_neighborhood.html#aead058787ca24c233d7d6d7825e1dac3">W_ij_</a>[n] * Vol_k[index_j];</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160; </div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;                        observed_quantity += weight_j * data_k[index_j];</div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;                        ttl_weight += weight_j;</div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;                    }</div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;                }</div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;                interpolated_quantities_[index_i] = observed_quantity / (ttl_weight + TinyReal);</div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;            };</div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160; </div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;            <span class="keywordtype">void</span> prepareContactData(<span class="keyword">const</span> std::string&amp; variable_name)</div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;            {</div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;                <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> k = 0; k != this-&gt;contact_particles_.size(); ++k)</div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;                {</div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;                    contact_Vol_.push_back(&amp;(this-&gt;contact_particles_[k]-&gt;Vol_));</div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;                    StdLargeVec&lt;VariableType&gt;* contact_data =</div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;                        this-&gt;contact_particles_[k]-&gt;getVariableByName&lt;DataTypeIndex, <a class="code" href="class_variable_type.html">VariableType</a>&gt;(variable_name);</div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;                    contact_data_.push_back(contact_data);</div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;                }</div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;            }</div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;        };</div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160; </div>
<div class="line"><a name="l00107"></a><span class="lineno"><a class="line" href="class_s_p_h_1_1observer__dynamics_1_1_correct_interpolation_kernel_weights.html">  107</a></span>&#160;        <span class="keyword">class </span><a class="code" href="class_s_p_h_1_1observer__dynamics_1_1_correct_interpolation_kernel_weights.html">CorrectInterpolationKernelWeights</a> : </div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;            <span class="keyword">public</span> <a class="code" href="class_s_p_h_1_1_interaction_dynamics.html">InteractionDynamics</a>, <span class="keyword">public</span> <a class="code" href="class_s_p_h_1_1_data_delegate_contact.html">InterpolationContactData</a></div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;        {</div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;        <span class="keyword">public</span>:</div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;            <a class="code" href="class_s_p_h_1_1observer__dynamics_1_1_correct_interpolation_kernel_weights.html">CorrectInterpolationKernelWeights</a>(<a class="code" href="class_s_p_h_1_1_base_contact_body_relation.html">BaseContactBodyRelation</a>* body_contact_relation);</div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;            <span class="keyword">virtual</span> ~<a class="code" href="class_s_p_h_1_1observer__dynamics_1_1_correct_interpolation_kernel_weights.html">CorrectInterpolationKernelWeights</a>() {};</div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;        <span class="keyword">protected</span>:</div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;            StdVec&lt;StdLargeVec&lt;Real&gt;*&gt; contact_Vol_;</div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;            <span class="keyword">virtual</span> <span class="keywordtype">void</span> Interaction(<span class="keywordtype">size_t</span> index_i, Real dt = 0.0) <span class="keyword">override</span>;</div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;        };</div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;    }</div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;}</div>
</div><!-- fragment --></div><!-- contents -->
<div class="ttc" id="aclass_s_p_h_1_1_neighborhood_html_a1e2d0d9c7af09e2ee0e58903b171902d"><div class="ttname"><a href="class_s_p_h_1_1_neighborhood.html#a1e2d0d9c7af09e2ee0e58903b171902d">SPH::Neighborhood::current_size_</a></div><div class="ttdeci">size_t current_size_</div><div class="ttdef"><b>Definition:</b> neighbor_relation.h:45</div></div>
<div class="ttc" id="aclass_s_p_h_1_1_data_delegate_contact_html"><div class="ttname"><a href="class_s_p_h_1_1_data_delegate_contact.html">SPH::DataDelegateContact</a></div><div class="ttdoc">prepare data for contact particle dynamics</div><div class="ttdef"><b>Definition:</b> base_particle_dynamics.h:213</div></div>
<div class="ttc" id="aclass_s_p_h_1_1_neighborhood_html_aaec2f984f8c1afd41b2ea98ec7033f99"><div class="ttname"><a href="class_s_p_h_1_1_neighborhood.html#aaec2f984f8c1afd41b2ea98ec7033f99">SPH::Neighborhood::j_</a></div><div class="ttdeci">StdLargeVec&lt; size_t &gt; j_</div><div class="ttdef"><b>Definition:</b> neighbor_relation.h:48</div></div>
<div class="ttc" id="aclass_variable_type_html"><div class="ttname"><a href="class_variable_type.html">VariableType</a></div></div>
<div class="ttc" id="aclass_s_p_h_1_1_neighborhood_html"><div class="ttname"><a href="class_s_p_h_1_1_neighborhood.html">SPH::Neighborhood</a></div><div class="ttdoc">A neighborhood around particle i.</div><div class="ttdef"><b>Definition:</b> neighbor_relation.h:42</div></div>
<div class="ttc" id="aclass_s_p_h_1_1observer__dynamics_1_1_interpolating_a_quantity_html"><div class="ttname"><a href="class_s_p_h_1_1observer__dynamics_1_1_interpolating_a_quantity.html">SPH::observer_dynamics::InterpolatingAQuantity</a></div><div class="ttdoc">Interpolate a given member data in the particles of a general body.</div><div class="ttdef"><b>Definition:</b> observer_dynamics.h:46</div></div>
<div class="ttc" id="aclass_s_p_h_1_1observer__dynamics_1_1_correct_interpolation_kernel_weights_html"><div class="ttname"><a href="class_s_p_h_1_1observer__dynamics_1_1_correct_interpolation_kernel_weights.html">SPH::observer_dynamics::CorrectInterpolationKernelWeights</a></div><div class="ttdoc">correct kernel weights for interpolation between general bodies</div><div class="ttdef"><b>Definition:</b> observer_dynamics.h:107</div></div>
<div class="ttc" id="aclass_s_p_h_1_1_data_delegate_contact_html_a9c6f57fe46a57fef5ab82638eb446439"><div class="ttname"><a href="class_s_p_h_1_1_data_delegate_contact.html#a9c6f57fe46a57fef5ab82638eb446439">SPH::DataDelegateContact::contact_configuration_</a></div><div class="ttdeci">StdVec&lt; ParticleConfiguration * &gt; contact_configuration_</div><div class="ttdef"><b>Definition:</b> base_particle_dynamics.h:223</div></div>
<div class="ttc" id="aclass_s_p_h_1_1_base_contact_body_relation_html"><div class="ttname"><a href="class_s_p_h_1_1_base_contact_body_relation.html">SPH::BaseContactBodyRelation</a></div><div class="ttdoc">The base relation between a SPH body and its contact SPH bodies.</div><div class="ttdef"><b>Definition:</b> body_relation.h:166</div></div>
<div class="ttc" id="aclass_s_p_h_1_1_neighborhood_html_aead058787ca24c233d7d6d7825e1dac3"><div class="ttname"><a href="class_s_p_h_1_1_neighborhood.html#aead058787ca24c233d7d6d7825e1dac3">SPH::Neighborhood::W_ij_</a></div><div class="ttdeci">StdLargeVec&lt; Real &gt; W_ij_</div><div class="ttdef"><b>Definition:</b> neighbor_relation.h:49</div></div>
<div class="ttc" id="aclass_s_p_h_1_1_interaction_dynamics_html"><div class="ttname"><a href="class_s_p_h_1_1_interaction_dynamics.html">SPH::InteractionDynamics</a></div><div class="ttdoc">This is the class for particle interaction with other particles.</div><div class="ttdef"><b>Definition:</b> particle_dynamics_algorithms.h:111</div></div>
<div class="ttc" id="anamespace_s_p_h_html"><div class="ttname"><a href="namespace_s_p_h.html">SPH</a></div><div class="ttdef"><b>Definition:</b> solid_body_supplementary.cpp:9</div></div>
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